Having this same, game breaking (in this current meta at least) issue, with all cards similar (Frogify, Kenrith's Transformation, Icthymorphosis, etc).
I know there is certain ruling that applies to this instance; however, after talking with three separate judges, they all agreed that Ashaya shouldn't keep the ability and that this is indeed a bug.
Added, having the same issue with these cards with Ugin's -X ability. They change the color of the creature, but his -X does not exile them when it should.
Having this same, game breaking (in this current meta at least) issue, with all cards similar (Frogify, Kenrith's Transformation, Icthymorphosis, etc).
I know there is certain ruling that applies to this instance; however, after talking with three separate judges, they all agreed that Ashaya shouldn't keep the ability and that this is indeed a bug.
Added, having the same issue with these cards with Ugin's -X ability. They change the color of the creature, but his -X does not exile them when it should.